Alibrary charges a late return fee of $3.50 plus $0.15 per day that a book is returned late. write an equation to find the total late fee f for any number of days late d.

How much money does ron have left each month after his fixed expenses? ron graduated from college five years ago. he recently bought a house, but shares it with a housemate who pays him $800 a month for rent and utilities. ron is putting a budget worksheet together so he will have a better idea of where his money is going and where he can save. enlarge